# Inline `dyn` A relatively simple example wrapper working (kinda) as a *by-value* `dyn Trait`. Limitations: * The wrapper size is fixed. The content either fits, or it doesn’t compile. * Supporting each trait requires a bit of code, as there is no way to express “for each *trait* X” in Rust. * Like with `Box`, you can’t call by-value methods on the content. * Requires unstable features (notably `ptr_metadata`, others are probably avoidable). * `unsafe` here, `unsafe` there, `unsafe` everywhere! (It does pass Miri though).